43 citations · 122 across the 16 of their papers we have counts for
17 papers
The Long-Term Radial Velocity Stability of the COS G130M/1291 Mode
John Debes, David M. French, Leonardo A. Dos Santos +3
We investigate the long-term radial velocity (RV) stability of one of the Far-UV (FUV) modes on the Cosmic Origins Spectrograph (COS). We do so by using a standard white dwarf, WD~…
Early Exploration of the Scientific Discovery Space for the Habitable Worlds Observatory
Courtney D. Dressing, Danica Adams, Evelyne Alecian +324
The Habitable Worlds Observatory (HWO) is a future NASA flagship mission concept identified by the Astro2020 Decadal Survey as the highest priority for large space missions. HWO sh…
Revealing Cosmic Ecosystems with the Hubble Space Telescope in 2030s and Beyond
Sanchayeeta Borthakur, Tanmay Singh, David French +22
Ultraviolet spectroscopy with the Hubble Space Telescope (HST) provides the most direct and sensitive probe of the disk-circumgalactic medium (CGM) interface at radii of 20 kpc, wh…
High-S/N Quasar Observations with HST/COS: Deep Fields for Spectroscopy
Andrew J. Fox, Jerry Kriss, Philipp Richter +49
Hubble is still in prime observing condition for making transformative discoveries in UV astronomy. In this white paper we describe the science case for a deep (S/N>30) UV spectros…
Low Metallicity Gas on the Outskirts of the Local Group: the Circumgalactic Medium of Sextans B
Andrew J. Fox, Sapna Mishra, Frances H. Cashman +6
We present a UV absorption-line analysis of the circumgalactic medium (CGM) of Sextans B, a dwarf irregular galaxy at 1.3 Mpc distance on the outer frontier of the Local Group. Usi…
Project AMIGA: The Inner Circumgalactic Medium of Andromeda from Thick Disk to Halo
Nicolas Lehner, J. Christopher Howk, Lucy Collins +22
The inner circumgalactic medium (CGM) of galaxies, where disk and halo processes intersect, remains poorly characterized despite its critical role in regulating galaxy evolution. W…
Characterizing gas flows through observations of the disk-CGM interface with the HWO
Sanchayeeta Borthakur, Joseph N. Burchett, Frances Cashman +5
How gas gets into, through, and out of galaxies is critical to understanding galactic ecosystems. The disk-CGM interface region is uniquely suited for studying processes that drive…
Ultraviolet Properties of Multi-phase Gas Toward the Inner Galaxy
Frances H. Cashman, Andrew J. Fox, Debopam Som +6
We present a systematic study of the multi-phase interstellar gas in the Inner Galaxy using HST/STIS absorption spectroscopy of 16 massive stars located at spectroscopic distances…
The Metallicities of Five Small High-Velocity Clouds
Trisha Ashley, Andrew J. Fox, Felix J. Lockman +5
High-velocity clouds (HVCs) are multi-phase gas structures whose velocities (|v_LSR|>100 km/s) are too high to be explained by Galactic disk rotation. While large HVCs are well cha…
Observations of a Magellanic Corona
Dhanesh Krishnarao, Andrew J. Fox, Elena D'Onghia +6
The Large and Small Magellanic Clouds (LMC/SMC) are the closest major satellite galaxies of the Milky Way. They are likely on their first passage on an infalling orbit towards our…
The HI Column Density Distribution of the Galactic Disk and Halo
David M. French, Andrew J. Fox, Bart P. Wakker +8
We present a census of neutral gas in the Milky Way disk and halo down to limiting column densities of (HI) cm using measurements of HI Lyman-series absorpti…
Evidence for a Rotational Component in the Circumgalactic Medium of Nearby Galaxies
David M. French, Bart P. Wakker
We present results of a study comparing the relative velocity of absorbers to the rotation velocity of nearby galaxy disks in the local universe (). We have…
Completing the Hydrogen Census in the Circumgalactic Medium at z~0
D. J. Pisano, A. Fox, D. French +4
Over the past decade, Lyman-alpha and metal line absorption observations have established the ubiquity of a gas-rich circumgalactic medium (CGM) around star-forming galaxies at z~0…
Understanding the circumgalactic medium is critical for understanding galaxy evolution
Molly S. Peeples, Peter Behroozi, Rongmon Bordoloi +69
Galaxies evolve under the influence of gas flows between their interstellar medium and their surrounding gaseous halos known as the circumgalactic medium (CGM). The CGM is a major…
Probing Large Galaxy Halos at with Automated -Absorption Matching
David M. French, Bart P. Wakker
We present initial results from an ongoing large-scale study of the circumgalactic medium in the nearby Universe ( km/s), using archival Cosmic Origins Spectrograph…
Nearby galaxy filaments and the Lya forest: confronting simulations and the UV background with observations
Bart P. Wakker, Audra K. Hernandez, David French +3
Simulations of the formation of large-scale structure predict that dark matter, low density highly ionized gas, and galaxies form 10 40 Mpc scale filaments. These structure are eas…
A Low Metallicity Molecular Cloud In The Lower Galactic Halo
Audra K. Hernandez, Bart P. Wakker, Robert A. Benjamin +5
We find evidence for the impact of infalling, low-metallicity gas on the Galactic disk. This is based on FUV absorption line spectra, 21-cm emission line spectra, and FIR mapping t…